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Python 3.15 development features and performance updates

Python 3.15 is the next major step in the evolution of the world’s most popular programming language. Currently available as a release candidate, this version introduces lazy imports, a sampling…

• Python 3.15 introduces lazy imports for faster startup time
• Tachyon sampling profiler added for performance analysis
• Frozendict immutable dictionary type enhances data safety

2h ago ·dev.to

NET::ERR_CERT_AUTHORITY_INVALID: When the Root Itself Is Not Trusted

The hostname matches. The chain is complete — every intermediate is present, each certificate signs the next, and it all leads up to a single certificate at the top. The dates are fine.

• NET::ERRCERTAUTHORITYINVALID occurs when client refuses to trust root certificate.
• Root certificate not recognized by client's trust store.
• Causes include self-signed certs, private CAs, or untrusted roots.

2h ago ·dev.to

Your retry logic is correct and does nothing

A comment on one of my posts sat open as an issue for two weeks before I understood how bad the thing it described actually was. The post was about an AI assistant missing the SQS trigger on a Lambda.

2h ago ·dev.to